SOLUTION: solve for x. 3 : 5 :: 81 : x

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Question 726706: solve for x. 3 : 5 :: 81 : x
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
solve for x. 3 : 5 :: 81 : x
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3:5::81:x no spaces
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Product of means = product of extremes
3x = 5*81
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It's the same as
3/5 = 81/x